nVent A30304SU - Screw-Cover Pull Box Extender Type 1, fits 30.00x30.00, Gray, Steel
nVent

A30304SU

UPC: 783510301682

Documents & Media
Installation Instructions

Contact for Pricing

Overview

The nVent Screw-Cover Pull Box Extender Type 1 (SKU: A30304SU) is a UL 50, 50E Listed, Type 1-rated steel enclosure designed to expand wiring capacity in commercial and general industrial applications. Engineered for seamless integration with existing pull box systems, this extender eliminates the need for costly custom-sized pull boxes by providing additional depth and volume where space is limited. Constructed from 16-gauge mild steel with an ANSI 61 gray polyester powder paint finish, the extender ensures durability and corrosion resistance in demanding environments. The product features unique keyhole screw slots for quick installation, plated steel mounting hardware for secure attachment, and maintains grounding continuity between the main enclosure and extender—a critical safety requirement in electrical installations. Ideal for retrofitting aging infrastructure or accommodating increased wiring density in data centers, manufacturing facilities, and utility installations, the nVent extender simplifies compliance with NEC and OSHA standards by offering a pre-engineered, code-compliant solution. Its Type 1 NEMA rating provides protection against dust ingress (IP30 per IEC 60529), making it suitable for indoor environments where environmental contaminants pose risks to electrical systems. Compatibility with Type 1 pull box accessories—including flush covers, door frames, and grounding devices—further enhances its versatility, allowing for standardized system design across projects. Professionals in electrical contracting, industrial maintenance, and facility management rely on nVent’s reputation for high-performance electrical solutions, backed by decades of industry leadership and rigorous third-party certifications. The A30304SU model’s 30.00" x 30.00" footprint and 4" depth provide a balanced expansion option for medium-sized pull boxes, while the sliding-on mounting system ensures tool-free alignment with existing hardware patterns. Whether used to resolve overcrowded junction boxes, facilitate future reconfigurations, or meet evolving code requirements, this extender delivers a cost-effective, time-saving alternative to traditional custom fabrication. Trusted by engineers and electricians worldwide, nVent’s pull box extenders exemplify the company’s commitment to innovation in electrical infrastructure management.
  • Unique keyhole screw slots for easy installation
  • Plated steel screws included to mount to pull box
  • Compatible with Type 1 Pull Box accessories
  • Maintains grounding between main enclosure and extender
  • Extenders are finished with paint over plated surfaces

Specifications

Application
Power Distribution
Color
Gray
Color Code
ANSI 61
Depth
13 IN
Depth
4 in
Depth, Maximum
4
Depth, Minimum
4
Finish
Painted
Finish
Powder Coated
Height
30 IN
Height
44 IN
IP Rating
IP30
Material
Mild Steel
Material
Steel
Mounting Type
Sliding-on with keyhole screw slots
NEMA Rating
Type 1
NEMA Rating
1
Protection Rating
NEMA Type 1
Size
30.00x30.00x4.00
Style
Painted
Thickness
16 ga
Thickness
51.40mm (2.024")
Type
General Accessories
Type
Commercial Accessories
Weight
13 lb
Width
30 IN
Width
762 mm
Works With
NEMA
Package Dimensions (L x W x H)
30.75 IN x 30.5 IN x 4.5 IN
Package Dimensions (L x W x H)
78.105 cm x 77.47 cm x 11.43 cm
Package Weight (Imperial)
13.000 L
Package Weight (Metric)
5.897 kg
Screw-Cover Pull Box Extender Type 1, fits 30.00x24.00, Gray, Steel

A30244SU

Screw-Cover Pull Box Extender Type 1, fits 30.00x24.00, Gray, Steel
The NEMA 4/4X/12 features a standard padlock-able feature with a single or (2) single point latches depending on the enclosure size. They are galvanealed steel coated. (Padlocks not included)

AB314

The NEMA 4/4X/12 features a standard padlock-able feature with a single or (2) single point latches depending on the enclosure size. They are galvanealed steel coated. (Padlocks not included)

How to Install the A30304SU Controller

This guide provides step-by-step instructions for installing and configuring the A30304SU Controller on a DIN rail.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors

  1. Mount the controller

    Secure the A30304SU controller to the DIN rail using the integrated clips. Ensure the controller is level and firmly attached.

  2. Connect the power supply

    Use terminal connectors to connect the power supply wires to the designated input terminals on the controller. Verify that the connections are secure.

  3. Configure the controller settings

    Power on the controller and use the programming interface to set the desired operational parameters. Follow the on-screen prompts to complete the configuration.

  4. Calibrate the controller

    Perform a calibration check by following the calibration procedure outlined in the user manual. Ensure all readings are within acceptable ranges.

Frequently Asked Questions about nVent

What industries and applications are nVent products used for?

nVent products are engineered for critical infrastructure and industrial applications across multiple demanding sectors. Key markets include Construction, Data Centers, Defense, Healthcare, Mining, Oil & Gas Refineries, Power Plants, Rail/Transit, Renewable Energy, Security, Ship Building, Steel Mills, Telecom, and Utilities. Their solutions are designed to withstand extreme environmental conditions, with temperature ranges from -55°C to 105°C and specialized features like UV resistance, oil resistance, and flame resistance.

What environmental ratings do nVent products have?

nVent enclosures feature comprehensive environmental ratings, including UL 508A, CSA, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications. They are rated IEC 60529 IP66, providing robust protection against dust, water, and corrosion in both indoor and outdoor environments. These products operate effectively in temperatures ranging from -40°F to 266°F, with enhanced UV inhibitors for outdoor weathering and oil-resistant gaskets for superior sealing.

What accessories are available for nVent products?

nVent offers a comprehensive range of accessories across multiple product lines, including EMC accessories like bonding cable clamps and strain reliefs, inline accessories such as lock inserts and mounting brackets, CONCEPT accessories including panel conversion kits and rack-mount angles, and seismic accessories for specialized mounting requirements. Key accessory categories include grounding kits, DIN rail mounting solutions, panel supports, handles, and various mounting hardware compatible with different enclosure types.

What certifications and standards do nVent products comply with?

nVent products meet critical international certifications including UL (United States), CSA (Canada), CE (European Community), and EAC (Russia). Our products are designed to comply with rigorous industrial standards such as NEMA enclosure ratings, IEC 60529 IP ratings, and international safety standards across multiple industrial markets including oil & gas, power, manufacturing, and infrastructure.

What is nVent's warranty policy?

nVent offers a standard 18-month warranty from invoicing date for most automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Warranty coverage includes repair or replacement at nVent's discretion, with certain conditions such as authorized service repairs and operation within designed capacity limits.

What technical support does nVent offer?

nVent offers comprehensive technical support through multiple global contact centers across North America, South America, Europe, Middle East, India, and Asia. Customers can reach technical experts by phone at regional numbers, with the North American headquarters in Minneapolis, MN providing primary support at +1.763.421.2240. Additionally, nVent provides online support resources through their website, including CAD drawing downloads and an 'Ask The Expert' feature to assist with product technical inquiries.